Clear Lake, Lower Koshkonong Creek Watershed (LR11)
Clear Lake, Lower Koshkonong Creek Watershed (LR11)
Blackhawk Drive Pier Beach, Clear Lake (775000)
0.03 Miles
0 - 0
Natural Community
Natural communities (stream and lake natural communities) represent model results that use predicted flow and temperature based on landscape features and related assumptions. Ranges of flow and temperature associated with specific aquatic life communities (fish, macroinvertebrates) help biologists identify appropriate resource management goals. Wisconsin's Riverine Natural Communities.
Shallow Headwater
Year Last Monitored
This date represents the most recent date of water quality monitoring stored in the SWIMS system. Additional field surveys for fish and habitat may be available subsequent to this date.
2017
Unknown
 
Rock
Trout Water 
Trout Waters are represented by Class I, Class II or Class III waters. These classes have specific ecological characteristics and management actions associated with them. For more information regarding Trout Classifications, see the Fisheries Trout Class Webpages.
No
Outstanding or Exceptional 
Wisconsin has designated many of the state's highest quality waters as Outstanding Resource Waters (ORWs) or Exceptional Resource Waters (ERWs). Waters designated as ORW or ERW are surface waters which provide outstanding recreational opportunities, support valuable fisheries and wildlife habitat, have good water quality, and are not significantly impacted by human activities. ORW and ERW status identifies waters that the State of Wisconsin has determined warrant additional protection from the effects of pollution. These designations are intended to meet federal Clean Water Act obligations requiring Wisconsin to adopt an 'antidegradation' policy that is designed to prevent any lowering of water quality - especially in those waters having significant ecological or cultural value.
No
Impaired Water 
A water is polluted or 'impaired' if it does not support full use by humans, wildlife, fish and other aquatic life and it is shown that one or more of the pollutant criteria are not met.
No

Fish and Aquatic Life

Current Use
The use the water currently supports. This is not a designation or classification; it is based on the current condition of the water. Information in this column is not designed for, and should not be used for, regulatory purposes.
Shallow Headwater
Shallow headwater lake describes the depth and location of the lake in a watershed. These variables affect the lakes response to watershed variables.
Attainable Use
The use that the investigator believes the water could achieve through managing "controllable" sources. Beaver dams, hydroelectric dams, low gradient streams, and naturally occurring low flows are generally not considered controllable. The attainable use may be the same as the current use or it may be higher.
FAL
Fish and Aquatic Life - waters that do not have a specific use designation subcategory assigned but which are considered fishable, swimmable waters.
Designated Use
This is the water classification legally recognized by NR102 and NR104, Wis. Adm. Code. The classification determines water quality criteria and effluent limits. Waters obtain designated uses through classification procedures.
Default FAL
Fish and Aquatic Life - Default Waters do not have a specific use designation subcategory but are considered fishable, swimmable waters.

Overview

Clear Lake is a small seepage and spring-fed lake that has some cottage development and a campground using septic systems. Water quality is considered good, with the fishery dominated by sunfish. A major algae bloom occurred in 1985 but the sources of the problem were not determined. WDNR recently acquired more than 80 acres of land and 800 feet of frontage on the lake and has installed a boat landing.

Date  2002

Author   Aquatic Biologist

Historical Description

Source: 1970, Surface Water Resources of Rock County Clear Lake, T4N, R13E, Section 20, Surface Acres = 82, S.D.F. = 1.26, Maximum Depth = 20 feet.

A moderately hard, spring and seepage fed natural lake. The fish population consists of northern pike, largemouth bass, bluegills, black crappies, pumpkinseeds, bullheads and forage species. Slow growing panfish, winterkill and vegetation are occasional management problems. A portion of the shoreline was chemically treated for aquatic vegetation in 1965. Shoreline improvements include 25 cottages, 3 resorts with rental boats, and 1 private campground. There is no public access at the present time. Migrating waterfowl utilize the lake and a few broods of wood duck and blue-wing teal have been observed. Hunting is allowed with no restrictions other than distances from home.

Date  1970

Author   Surface Water Inventory Of Wisconsin

Clear Lake, Lower Koshkonong Creek Watershed (LR11) Fish and Aquatic LifeClear Lake, Lower Koshkonong Creek Watershed (LR11) RecreationClear Lake, Lower Koshkonong Creek Watershed (LR11) Fish Consumption

General Condition

Clear Lake Blackhawk Drive Pier Beach was assessed for the 2018 listing cycle; E. coli data sample data were clearly below the 2018 WisCALM listing thresholds for the Recreation use. This beach was meeting this designated use and was not considered impaired.

Date  2017

Author  Ashley Beranek

Impaired Waters

Clear Lake (WBIC 775000) was placed on the impaired waters list for total phosphorus in 2014. The 2018 assessment showed continued impairment by phosphorus; new total phosphorus and chlorophyll-a sample data exceeded the 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use. Based on the most updated information, no change in the existing impaired waters listing was needed.

Date  2017

Author  Ashley Beranek

Impaired Waters

Clear Lake (775000) was placed on the impaired waters list for total phosphorus in 2014. The 2016 assessments showed continued excess algal growth; chlorophyll sample data exceed 2016 WisCALM listing thresholds for the Recreation use, however, total phosphorus did not exceed REC thresholds. Total phosphorus and chlorophyll data did not exceed Fish and Aquatic Life listing thresholds. Based on the most updated information, no change in existing impaired waters listing is needed.

Date  2015

Author  Aaron Larson

Condition

Wisconsin has over 84,000 miles of streams, 15,000 lakes and milllions of acres of wetlands. Assessing the condition of this vast amount of water is challenging. The state's water monitoring program uses a media-based, cross-program approach to analyze water condition. An updated monitoring strategy (2015-2020) is now available.

Compliance with Clean Water Act fishable, swimmable standards are located in the Executive Summary of Water Condition in 2016 . See also 'monitoring' and 'projects'.

Reports

Recommendations

Monitor Fish Tissue

Management Goals

Wisconsin's Water Quality Standards provide qualitative and quantitative goals for waters that are protective of Fishable, Swimmable conditions [Learn more]. Waters that do not meet water quality standards are considered impaired and restoration actions are planned and carried out until the water is once again fishable and swimmable

Management goals can include creation and implementation of a Total Maximum Daily Load Analysis, habitat restoration work, partnership education and outreach and more. If specific recommendations exist for this water, they will be displayed below.

Monitoring

Monitoring the condition of a river, stream, or lake includes gathering physical, chemical, biological, and habitat data. Comprehensive studies often gather all these parameters in great detail, while lighter assessment events will involve sampling physical, chemical and biological data such as macroinvertebrates. Aquatic macroinvertebrates and fish communities integrate watershed or catchment condition, providing great insight into overall ecosystem health. Chemical and habitat parameters tell researchers more about human induced problems including contaminated runoff, point source dischargers, or habitat issues that foster or limit the potential of aquatic communities to thrive in a given area. Wisconsin's Water Monitoring Strategy was recenty updated.

Grants and Management Projects

Monitoring Projects

Watershed Characteristics

Clear Lake is located in the Lower Koshkonong Creek watershed which is 265.61 miĀ². Land use in the watershed is primarily agricultural (62%), wetland (10%) and a mix of forest (9%) and other uses (18%). This watershed has 283.47 stream miles, 1,735.65 lake acres and 18,171.94 wetland acres.

Nonpoint Source Characteristics

This watershed is ranked High for runoff impacts on streams, Medium for runoff impacts on lakes and High for runoff impacts on groundwater and therefore has an overall rank of High. This value can be used in ranking the watershed or individual waterbodies for grant funding under state and county programs.However, all waters are affected by diffuse pollutant sources regardless of initial water quality. Applications for specific runoff projects under state or county grant programs may be pursued. For more information, go to surface water program grants.

Natural Community

Blackhawk Drive Pier Beach, Clear Lake is considered a Shallow Headwater under the state's Natural Community Determinations.

Natural communities (stream and lake natural communities) represent model results that use predicted flow and temperature based on landscape features and related assumptions. Ranges of flow and temperature associated with specific aquatic life communities (fish, macroinvertebrates) help biologists identify appropriate resource management goals. Wisconsin's Riverine Natural Communities.

Shallow headwater lake describes the depth and location of the lake in a watershed. These variables affect the lakes response to watershed variables.